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Dong Feng ZB35 - User Manual

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Factory Direct Tractors
Operator’s Manual
ZB25 ZB35 ZB45

Table of Contents

Questions and Answers

  • M
    Marcus SmithAug 18, 2025
    Why is my Dong Feng ZB35 Tractor exhaust smoking?
    • M
      Mark CamachoAug 18, 2025
      Exhaust smoking in your Dong Feng Tractor can stem from several causes. A slow or partially blocked injector nozzle can cause this problem; consider replacing or servicing it. Overloading the engine is another potential cause, so adjust the gearing accordingly. Incorrect fuel injection timing can also lead to exhaust smoke, so make sure to adjust it. Other causes include poor valve sealing or incorrect timing (check and adjust), uneven fuel delivery from the injector pump or injectors (check and service), a blocked air filter (clean or replace), or worn cylinder liners and piston rings (replace them).
  • R
    Ruben DixonAug 21, 2025
    What to do if my Dong Feng Tractor has oil pressure problems?
    • O
      olsonvalerieAug 21, 2025
      If your Dong Feng Tractor is experiencing oil pressure problems, start by checking the oil level and refilling it as needed. Also, check whether the oil intake is broken, as the oil pump might be sucking air. Other potential causes include a malfunctioning oil filter (replace it), a faulty oil filter pressure regulator valve spring (replace it), a worn-out oil pump (replace it or reduce its paper gasket), or excessive bearing clearance (check and replace bearings as necessary).
  • P
    Pamela HoganAug 25, 2025
    Why is my Dong Feng Tractor engine low on power?
    • C
      Catherine StevensAug 26, 2025
      A Dong Feng Tractor engine might be low on power for a few reasons. Check if the third ring is fitted upside down and refit it correctly, ensuring the mark '(up)' faces upward. Worn piston rings and valve guides can also reduce power; replace them. Finally, too much oil in the crankcase can hinder performance, so drain the oil to the correct level.
  • J
    johnfrankAug 27, 2025
    How to fix clutch slip in my Dong Feng ZB35?
    • J
      Jenny HorneAug 28, 2025
      If your Dong Feng Tractor's clutch is slipping, several factors could be responsible. Begin by checking the friction disc for oil stains; if present, wash the disc with petrol and repair the oil leak. A weakened or broken pressure plate spring can also cause slippage; replace it with a new one. Limited or no clutch pedal free travel is another possibility; readjust the pedal free travel as specified. Furthermore, a warped, unevenly worn, or worn-out clutch plate could be the culprit; rectify or replace it. Lastly, misaligned release levers can cause clutch slip, so adjust and align the lever ends in the same plane.
  • C
    Christopher SandersAug 30, 2025
    Why does my Dong Feng ZB35 have insufficient lifting capacity?
    • A
      Amy NguyenAug 30, 2025
      Insufficient lifting capacity in your Dong Feng Tractor could be due to several reasons. It may be caused by insufficient engine power output, so inspect and service/repair the engine. Also, check if the oil level in the transmission case is too low and replenish oil. Make sure that the weight in the bucket does not exceed the maximum specified loader capacity and reduce material load if needed. Other potential causes include lifting cylinder piston assembly leakage (check cylinders for leakage and repair as needed), a control valve leaking internally (replace the control valve and recheck operation), or a defective hydraulic pump (check and repair or replace).
  • R
    raymond06Sep 2, 2025
    What to do if the brake disengages incompletely on my Dong Feng ZB35?
    • S
      Sandra BurtonSep 2, 2025
      If the brake on your Dong Feng Tractor disengages incompletely, it could be due to a few reasons. A weakened brake shoe return spring can cause this issue; replace it with a new spring. Also, check if the brake pedals are unable to return, this may be caused by a damaged pedal return spring or a seized operating shaft, and fix as required. Limited or no pedal free travel can also prevent full disengagement; readjust the pedal free travel.
  • M
    Marc HartSep 8, 2025
    Why is there an abnormal sound in the gearbox of my Dong Feng Tractor?
    • R
      Rhonda MartinSep 8, 2025
      An abnormal sound in your Dong Feng Tractor's gearbox could indicate several issues. Excessively worn or damaged gearbox bearings or needle rollers might be the cause; check and replace them with new ones. Abnormal meshing of the main drive gears can also produce unusual sounds; examine the gear meshing zone print and backlash, and adjust them as per specifications. Lastly, worn-out spline shafts and sliding gears can cause noise; replace them with new parts.
  • S
    Shawn FordSep 12, 2025
    What causes an overheating gearbox in a Dong Feng ZB35 Tractor?
    • C
      Candice HowardSep 12, 2025
      An overheating gearbox in your Dong Feng Tractor can be caused by several factors: * Too much or too little backlash - adjust as required. * Insufficient or excessive lubrication oil - add or drain the transmission oil to the specified level. * Old or contaminated oil - change the oil and filter.
  • A
    Andrea SimmonsNov 15, 2025
    How to start a Dong Feng Tractor when the diesel engine fails to start?
    • D
      Dr. Martin RiosNov 15, 2025
      If your Dong Feng Tractor's diesel engine won't start, several issues could be the cause. First, check if there's fuel in the tank and add fuel if needed. Air in the fuel system can also prevent starting, so bleed the air and identify the cause. A blocked fuel system is another possibility; replace the fuel filter and inspect the fuel delivery line. Other potential causes include worn-out injector pump components (replace them), blocked or poorly atomizing injectors (replace or service them), incorrect valve clearance (adjust to specifications), a valve leak (replace or grind the valve), a blown head gasket (replace and tighten the cylinder head), piston ring bypass (replace, clean, or reassemble the rings), incorrect injector pump or valve timing (readjust), low ambient temperature (use g...

Summary

Operators Manual

Tractor Specifications

Front End Loader Specifications

Safety Precautions

Use Seat Belt and Foldable ROPS Properly

Proper use of seat belt and foldable Roll-Over Protective Structure for safety.

Safe Tractor Operation

Using the tractor safely for its intended purpose and avoiding common accidents.

Hillside Safety

Operating safely on slopes, avoiding tips, and managing turns with caution.

Use Low Gear on Hills

Using low gear for descending hills and maintaining control, especially on slippery surfaces.

Tow Loads Safely

Towing loads safely, considering weight, speed, slopes, and braking systems.

Keep ROPS Installed Properly

Ensuring the Roll-Over Protective Structure (ROPS) is correctly installed and maintained for protection.

Practice Safe Maintenance

Following safe maintenance procedures, keeping the area clean, and ensuring proper tool usage.

Safety First

Maintenance Guidelines

Using genuine parts, following maintenance schedules, and understanding the importance of regular servicing.

General Safety Precautions

Key safety precautions for tractor operation, including using ROPS, proper clothing, and operator fitness.

Starting the Tractor Safely

Procedures for safely starting the tractor engine, including pre-checks and ventilation.

Safe Tractor Operation Practices

Safe operating practices for the tractor, including speed selection, turning, and public road driving.

Towing and Transport Safety

Safety guidelines for towing implements and transporting the tractor, emphasizing stability and braking.

Using Implements and Machinery Safely

Connecting implements safely and ensuring proper operation of the power take-off shaft.

Safe Tractor Stopping Procedures

Safe procedures for stopping the tractor, including parking and engine shutdown.

Front End Loader Safety

Safety Rules and Precautions

Understanding loader safety precautions and regulations for safe operation.

General Safety Rules for Loader

Ensuring proper setup, maintenance, operator training, and use of safety equipment for the loader.

Pre-Use Loader Inspections

Conducting pre-use inspections of hoses, seals, structural integrity, and lubrication points.

Safe Loader Operation Practices

Safe operating practices for the loader, including using ROPS, avoiding shock loads, and proper transport of attachments.

Loader Attachment and Removal Safety

Safety procedures and steps for attaching and removing the front end loader assembly.

Loader Maintenance Safety

Following maintenance procedures and safety warnings for servicing the loader.

Quick Reference Guide

Instrument Panel And Controls

Instrument Panel Display Overview

Identifying and understanding the tractor's instrument panel gauges and indicators.

Tractor Control Operations

Understanding the operation of various tractor controls like accelerator, hydraulic lever, and gear shifts.

Front Wheel Drive and Clutch Controls

Operating the front wheel drive lever and clutch pedal for traction and gear changes.

Running-in Procedure

Tractor Running-in With Load

Running the tractor with a load, gradually increasing it to break in components.

Operating Instructions

Pre-Start Checks for Operation

Performing essential checks before starting the tractor's engine for safety and readiness.

Starting and Stopping the Tractor

Following correct procedures for starting and stopping the tractor engine safely.

Safe Tractor Driving Techniques

Safe driving techniques, including gear selection, acceleration, and clutch operation.

Checks During Driving

Monitoring instrument gauges and checking critical systems like cooling water and oil pressure while driving.

Operating the Differential Lock

Understanding when and how to use the differential lock for improved traction.

Tractor Working Devices Control

Controlling tractor working devices like the hydraulic lift system for implement operation.

Towing and Dragging Operations

Safely performing towing and dragging operations using the tractor's drawbar and appropriate ballast.

Operating the PTO

Correctly operating the Power Take-Off (PTO) at specified speeds for implements.

Mechanical Adjustment

Single Stage Clutch Adjustment

Adjusting the single stage clutch on ZB25 models for proper engagement and free play.

Two Stage Clutch Adjustment

Checking and adjusting the two-stage clutch on ZB35/ZB45 models for wear and performance.

Technical Maintenance

Oil and Lubrication Details

Details on diesel oil, lubricants, lubrication points, and oil level inspection.

Maintenance Schedule Overview

Following the recommended service guide for optimal tractor condition and longevity.

Maintenance

Fuel System Maintenance

Checking fuel level, draining/cleaning the tank, changing filters, and bleeding the fuel system.

Engine Oil Maintenance Procedures

Checking and replacing engine oil and filters, and using correct oil types.

Transmission and Hydraulic Oil Management

Managing transmission oil, hydraulic system oil, and replacing hydraulic filters.

Trouble-Shooting Guide

Engine - Fails to Start

Troubleshooting common causes for the diesel engine failing to start, related to fuel and compression.

Engine - Oil Pressure Problems

Diagnosing and resolving issues related to low or no engine oil pressure.

Hydraulic System Issues

Troubleshooting hydraulic system problems like linkage not lifting or implements not lowering.

Loader Operation

Tractor Preparation for Loader

Preparing the tractor for loader attachment, including counterweight, ROPS, hydraulic system, tyres, and track settings.

Loader Attachment and Removal

Safety procedures and steps for attaching and removing the front end loader assembly.

Operating the Loader

General operating guidelines for the loader, including low range engagement and cold weather operation.

Loader Operation Techniques

Techniques for transporting buckets, scraping, backfilling, and controlling loader functions.

Loader Maintenance

General Loader Maintenance

General maintenance cautions and procedures for the loader, including hydraulic line handling.

Loader Trouble Shooting

Lifting and Bucket Cylinder Issues

Troubleshooting problems with lifting and bucket cylinders not working or having insufficient capacity.

Loader Lift Performance Issues

Diagnosing slow, uneven lifts, or incorrect operation direction of loader cylinders.

Loader Oil System Issues

Troubleshooting excessive foam, abnormal oil pump noise, slow bucket speed, and oil leakage.

Dong Feng ZB35 Specifications

General IconGeneral
BrandDong Feng
ModelZB35
CategoryTractor
LanguageEnglish

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